Magnetic Properties of Single-Crystal TmNi

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  • Endo Masato
    Division of Physics, Faculty of Engineering, Yokohama National University
  • Umehara Izuru
    Division of Physics, Faculty of Engineering, Yokohama National University
  • Adachi Yoshiya
    Division of Physics, Faculty of Engineering, Yokohama National University
  • Lu Qing Feng
    Division of Physics, Faculty of Engineering, Yokohama National University
  • Sato Kiyoo
    Division of Physics, Faculty of Engineering, Yokohama National University

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Single-Crystal TmNi samples were grown by use of a metallic crucible. The temperature dependence of specific heat was measured in the temperature range from 1.4 to 80 K by the adiabatic method and two transitions were observed at 2.7 and 3.8 K. In addition, the Schottky-type specific heat was observed and it was discussed on the basis of energy level splitting due to crystalline electronic field effect. The magnetization curves were measured in a field up to 5 T at various temperatures for principal axes. We proposed the magnetic structure in the lower temperature region. The magnetic susceptibilities were measured in the temperature range from 5.0 to 300 K for principal axes, and the average value of the effective magnetic moment for principal axes was estimated at 8.9×10−29 Wb·m/Tm3+, which is in good agreement with the Tm3+ free ion value.

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